KR200185850Y1 - Cover for manhole - Google Patents

Abstract

The present invention relates to a manhole cover for blocking the entrance of the manhole.

An object of the present invention is to ensure safety by improving the structure that can be combined with the support frame and the lid constituting the cover for the manhole.

In addition, by improving the material of the manhole cover is to achieve a rigidity and weight loss.

The present invention for achieving the above object has a receiving portion (11), a frame-shaped pedestal (10) having a recessed portion 12 on one surface of the receiving portion (11); A flat lid 20 seated at the receiving portion 11 and having a protrusion 21 inserted into the recess 12 at one end thereof; It comprises a coupling means for coupling the opposite side of the protrusion 21 of the lid 20 and the other side of the recessed portion 12 of the pedestal (10).

Description

Manhole Cover {COVER FOR MANHOLE}

The present invention relates to a manhole cover for blocking the entrance of the manhole.

In general, a manhole refers to a concrete pit provided for human access to inspect or clean underground sewers, water pipes, underground cables, and pavements, usually where the thickness or direction of the pipe is diverted, It is installed in the middle of the starting point, intersection point, and long straight part.

Since the entrance of the manhole is usually facing the road surface, a cover made of steel is provided so that there is no inconvenience in traveling or passing by a pedestrian.

The cover is composed of a square or circular support frame fixed to the entrance of the manhole, and a flat lid seated in the support frame, the lid is provided with a hook or a hole using a ring rod The lid can be opened.

The lid is classified into a closed type without a hole, a porous type with a plurality of holes, and a lattice type. In particular, the closed type lid is applied to a manhole in which a cable is embedded to block rainwater inflow.

Manhole cover of such a configuration is installed in any place, such as a roadway or sidewalk, when installed on the roadway is designed to withstand this because it is continuously loaded by the vehicle.

However, the conventional manhole cover has the following problems.

First, since the lid is made of steel with low mechanical strength, deformation and breakage occur easily. Therefore, the life span of the manhole cover is short, resulting in economic loss.

Second, the thickness of the lid is heavy in order to ensure mechanical strength. Thus, opening and closing the lid requires a large number of operators and inconveniences in carrying and handling.

Third, because the support frame and the lid is not coupled, the safety problem occurs when the lid is opened or bounced when a heavy load is acted on by a large vehicle. This problem can be said to be the most serious problem because it causes large accidents.

Fourth, because the support frame and the lid is not coupled, a rattling noise occurs when the vehicle or pedestrian passes over the lid.

Fifth, since the support frame and the lid are injection molding, the surface flatness is lowered. Therefore, it is difficult to completely adhere the support frame and the lid, and rainwater flows between the support frame and the lid, which causes safety accidents such as a short circuit accident and a disconnection due to contact with the cable embedded in the manhole.

In addition, it requires a separate operation to shed rainwater introduced into the manhole.

The present invention aims to ensure safety by improving the structure that can be combined with the support frame and the lid constituting the cover for the manhole.

In addition, through the improvement of the material of the manhole cover is aimed at achieving rigidity and weight loss.

1 is an exploded perspective view showing a first embodiment of the manhole cover according to the present invention

Figure 2 is a longitudinal cross-sectional view showing a coupling state of FIG.

3 is a coupling process of the cover for the manhole according to the present invention

Figure 4a is a perspective view of the main portion showing a first embodiment of the bolt fixture according to the present invention

Figure 4b is a perspective view of the main portion showing a second embodiment of the bolt fixture according to the present invention

Figure 5 is a longitudinal cross-sectional view showing a second embodiment of the manhole cover according to the present invention

Figure 6 is a longitudinal cross-sectional view showing a third embodiment of the manhole cover according to the present invention

Explanation of symbols for the main parts of the drawings

10: pedestal 11: first receiving portion

12: first depression 20: lid

21: first protrusion 22: through part

23: opening 24: groove

30: bolt 30a: shaft portion

30b: pinhole 31: nut

40: pin 50: clip

60: gasket 70: height adjustment member

71: second protrusion 72: second receiving portion

73: second depression

According to a form of the present invention for achieving the above object,

A frame-shaped pedestal having a receptacle, the recess having a recess on one surface thereof; A flat lid disposed on the receiving portion and having a protrusion inserted at one end of the recess; There is provided a cover for a manhole comprising a coupling means for engaging the opposite side of the projection of the lid and the opposite side of the depression of the pedestal.

Hereinafter, a preferred embodiment of the present invention will be described in more detail with reference to FIGS. 1 to 6.

1 is an exploded perspective view showing a first embodiment of the manhole cover according to the present invention, Figure 2 is a longitudinal cross-sectional view showing a coupling state of Figure 1, Figure 3 is a coupling process of the manhole cover according to the present invention .

1 and 2, the manhole cover of the present invention is largely composed of a frame-shaped pedestal 10 fixedly installed at the entrance of the manhole, and a lid 20 seated on the pedestal 10.

The pedestal 10 has a first accommodating part 11 on which the lid 20 is seated, and a first recessed part 12 is formed on one surface of the first accommodating part 11.

In addition, the lid 20 has a flat plate shape and is seated on the first accommodating part 11 of the pedestal 10, and at one end, a first protrusion 21 inserted into the first recess 12 is formed. It is.

Accordingly, by inserting the first protrusion 21 of the lid 20 into the first recessed portion 12 of the pedestal 10, one side of the pedestal 10 and the lid 20 obtains mutual coupling force.

On the other hand, the pedestal 10 and the other side of the lid is coupled by the coupling means.

The coupling means has a bolt 30 installed opposite the first recessed portion 12 of the pedestal 10 and a through portion formed so that the bolt 30 passes through the opposite side of the first protrusion 21 of the lid 20. (22) and a nut (31) which engages the other side of the pedestal (10) and the lid (20) by being fastened to the bolt (30) passing through the through part (22).

At this time, it is preferable that the bolt 30 is installed so that the threaded shaft portion 30a faces upward, and the nut 31 is fastened from the upper portion of the lid 20.

Because, when fastening the shaft portion 30a of the bolt 30 downward, the female thread portion must be formed so that the bolt 30 can be fastened in the pedestal 10, so that the manufacturing labor is increased, even if it has such a structure pedestal (10) This is because when the bolt 30 and the female screw part are not exactly matched at the time of fastening the lid and the lid 20, the bolt 30 is difficult to be fastened, and thus a problem occurs in bonding.

In addition, between the opposite end of the first protrusion 21 and the penetrating portion 22 of the lid 20 to avoid the interference of the lid 20 with the bolt 30 when the pedestal 10 and the lid 20 are coupled. The opening 23 is formed.

The reason for requiring the opening 23 is explained with reference to FIG. 3.

That is, when the lid 20 is coupled to the pedestal 10, the lid is inserted into the first recessed portion 12 of the pedestal 10 while the first protrusion 21 formed at one end of the lid 20 is inserted. The other end of the 20 is approached toward the pedestal 10. In this process, the other end of the lid 20 is circular, so that the bolt 30 and the through part 22 are displaced.

Therefore, by forming the opening 23 from which the interference portion with the bolt 30 of the lid 20 is removed, the bolt 30 can be smoothly introduced into the penetrating portion 22 through the opening 23.

In addition, the groove 31 corresponding to the thickness of the nut 31 is formed in the nut 31 installation portion of the lid 20 so that the nut 31 is inserted into the groove 24 so that the nut 31 can be inserted. ) Was prevented from protruding onto the lid 20.

4A and 4B show a first embodiment and a second embodiment for fixing the bolt 30, respectively.

That is, a method of drilling a pin hole 30b on the bolt 30 as shown in FIG. 4a and penetrating and fixing the pin 40 having a substantially U shape through the pin hole 30b, and a substantially U shape as shown in FIG. 4B. A method of fixing the upper clip 50 around the shaft portion 30a of the bolt 30 may be applied.

5 is a longitudinal sectional view showing a second embodiment of the manhole cover according to the present invention.

According to the drawing, the second embodiment of the manhole cover is provided with a frame-shaped gasket 60 between the pedestal 10 and the contact surface of the lid 20.

The gasket 60 maintains the airtightness between the pedestal 10 and the lid 20 to prevent rainwater from entering the manhole in advance.

At this time, the material of the gasket 60 is preferably made of any one of a rubber or a synthetic resin. However, if a similar action is possible, the gasket 60 is not limited to a specific material.

In addition, although the gasket 60 is installed on the inner surface of the pedestal 10, a drip tray 13 is formed to prevent rainwater from falling into the manhole when rainwater is introduced into the drip tray 13. One side of the drain hole (14) was placed in the drip tray (13) to allow drainage to the outside.

Figure 6 is a longitudinal cross-sectional view showing a third embodiment of the manhole cover according to the present invention.

According to the drawing, in the third embodiment of the manhole cover, a height adjusting member 70 is installed between the pedestal 10 and the lid 20 to raise the height of the lid 20 by the height of the height adjusting member 70. It was made to be possible.

When the height surface of the height adjustment member 70 is overlaid on the existing pavement road, the height of the lid 20 can be increased by installing between the pedestal 10 and the lid 20, so that the road This is very useful for matching the face.

At this time, the height adjusting member 70 is seated on the first receiving portion 11 of the pedestal 10 on which the lid 20 is seated, and the height of the lid 20 is seated on the height adjusting member 70. The internal structure of the adjusting member 70 should be the same as the internal structure of the pedestal 10.

That is, the height adjusting member 70 has a frame shape as a whole, and at one side, a second protrusion 71 is inserted into the recessed portion 12 of the pedestal 10, and the lid 20 is seated therein. The second recessed portion 73 is formed to have a second accommodating portion 72, and one surface of the second accommodating portion 72 is inserted into the first protrusion 21 of the lid 20.

On the other hand, the pedestal 10 and the lid 20 in common in the various embodiments described above can be applied in a variety of forms, such as round, oval, square (角形).

In addition, the pedestal 10 and the lid 20 is preferably made of cast iron.

This is because cast iron, in particular, nodular iron (ductile cast iron) is a material suitable for a manhole cover that is continuously subjected to heavy load because tensile strength and elongation are superior to steel.

The present invention as described above has the following effects.

First, safety can be ensured by combining the pedestal and the lid.

Second, since the base including the lid is made of cast iron, it is possible to reduce the deformation and breakage by improving the tensile strength and elongation. This can extend the lifespan, bringing economic benefits.

Third, the weight is light and easy to open and close the lid.

Fourth, because the pedestal and the lid are combined, there is no rattling noise when the vehicle or pedestrian passes over the lid.

Fifth, since the gasket is inserted between the pedestal and the lid can prevent rainwater from entering the manhole.

Claims (10)

A frame-shaped pedestal 10 having a receiving portion 11 and having a recessed portion 12 on one surface of the receiving portion 11; A flat lid 20 seated on the receiving portion 11 and having a protrusion 21 inserted into the recess 12 at one end thereof; The cover for the manhole, characterized in that it comprises a coupling means for coupling the opposite side of the protrusion (21) of the lid 20 and the depression (12) of the pedestal (10). The method of claim 1, The cover for the manhole, characterized in that the gasket (60) is installed between the pedestal (10) and the contact surface of the lid (20) for airtightness. The method of claim 2, The gasket 60 is a manhole cover, characterized in that made of rubber or synthetic resin. The method of claim 1, Joining means, Bolt 30 is provided on the opposite side of the recess 12 of the pedestal 10, Through portion 22 formed to penetrate the bolt 30 to the opposite side of the protrusion portion 21 of the lid 20, Mantle cover, characterized in that consisting of a nut (31) for coupling the pedestal (10) and the lid (20) by being fastened to the bolt (30) passed through the through part (22). The method of claim 4, wherein The bolt 30 is installed so that the threaded shaft portion (30a) is facing upwards, the nut (31) is characterized in that the cover for fastening from the top of the lid (20). The method of claim 5, The cover part for the manhole, characterized in that the groove (24) is formed so that the nut is immersed in the coupling portion of the nut (31) of the lid (20). The method of claim 5, The bolt 30 is a manhole cover, characterized in that fixed to the pedestal (10) by any one of the pin (40) or clip (50). The method of claim 4, wherein The manhole, which is opened between the opposite end of the protruding portion 21 of the lid 20 and the through portion 22 to avoid interference with the bolt 30 when coupling the lid 20 and the pedestal 10. Dragon cover. The method of claim 1, Mantle cover between the pedestal 10 and the lid 20, characterized in that the height adjustment member 70 is installed to increase the installation height of the lid. The method of claim 9, The height adjustment member 70, It has a frame shape having a size and appropriate height that can be seated on the receiving portion 11 of the pedestal 10, and has a receiving portion 72, the lid 20 is seated therein, the receiving portion ( One side of the cover 72, characterized in that it has a recess 73 so that the protrusion 21 of the lid 20 can be inserted.